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Growatt Error Codes – The Easy Fix.

Collaborative by Collaborative
February 12, 2022
in Support, Inverters
0
Home Support

The internet can be a confusing place when it comes to technical support and resolutions, especially when it comes to a complex device such as your Growatt inverter. Nonetheless, consider this your easily digestible source for Growatt error codes and what you should do to enable a swift resolution in the event of experiencing one.

Find your Growatt error code with ease, follow this process; 

1. Record the number (or numbers) displayed on the inverter. 

2. Note whether you have a grey (older model) or white (newer model) inverter colour.

3. Jump to the relevant Growatt inverter error code selection using one of the buttons below.

4. (example) if error code 302 is displayed, tap the 3XX button below, locate 302 and select the Error Code – #302 tab.

Need additional insight? Post your Growatt error codes and related question within the comments at the bottom of this post.

Growatt has come a long way as a regarded inverter manufacturer to the masses over the last decade. So much so that in 2020 they were the world’s No.1 Residential inverter manufacturer by market share according to IHS Markit. Such demand can be attributed to a well-rounded technology. Therefore, if you’re experiencing a Growatt error code, don’t panic, it’s not all doom and gloom, chances are there’s a logical solution. Potentially even something external affecting its operation.

IMPORTANT: Older model, 1st Generation Growatt inverters (grey colour) experience warning codes. Newer model, 2nd Generation Growatt inverters (white colour) experience error codes. For your convenience this post contains both;

Gen1 – grey inverter; Tap one of the bellow buttons to jump to your Growatt warning codes:

2xx
3xx
4xx

Gen2 – white inverter; Tap one of the bellow buttons to jump to your Growatt error codes;

2xx
3xx
4xx

Extracted directly from the manufacturer’s handbook, updated regularly with new codes as they arise, and interpreted in easy to understand formats where such doesn’t always exist. For additional insight, see References at the bottom of this post.

Poll:

Most common Growatt error codes.

Your Growatt error codes matter. Contribute to a global audience with Solar Analytica Polls and compare how common your Growatt error codes are;

What Growatt inverter fault codes are you experiencing?

Safe select with Solar Analytica® Polls.

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GEN1 INVERTERS (Grey).

#2xx

GROWATT ERROR CODES.

Warning Code - #200

Description: String fault.

What to do: After shutdown, check the panel is normal. If error message still exists, contact your solar installer.

Warning Code - #201

Description: String PID quick connect terminal detection error.

What to do: After shutdown, check the string terminal wiring. If error message still exists, contact your solar installer.

Warning Code - #202

Description: DC SPD function abnormal.

What to do: After shutdown, check the DC SPD. If error message still exists, contact your solar installer.

Warning Code - #203

Description: PV1 or PV2 Circuit short.

What to do: Check the PV panel polarity. Restart the inverter. If the warning still exist contact your solar installer.

Warning Code - #204

Description: Dryconnect function abnormal.

What to do: After shutdown, Check the dry Dryconnect wiring. If the warning still exist contact your solar installer.

Warning Code - #205

Description: PV1 or PV2 boost broken.

What to do: Restart the inverter. If the warning still exist contact your solar installer.

Warning Code - #206

Description: AC SPD function abnormal.

What to do: After shutdown, check the AC SPD. If the warning still exist contact your solar installer.

Warning Code - #207

Description: USB over-current.

What to do: 1. Unplug the U disk or monitor. 2. Re-access U disk or monitor after shutdown. 3. If the warning still exist contact your solar installer.

Warning Code - #208

Description: DC Fuse Open.

What to do: After shutdown, check fuse. If the warning still exist contact your solar installer.

Warning Code - #209

Description: The DC input voltage is exceeding the maximum tolerable value.

What to do: Immediately disconnect the DC switch and check the voltage. If the warning still exist after the normal voltage is restored, contact your solar installer.

Warning Code - #210

Description: PV Reversed.

What to do: Check PV input terminals. If the warning still exist contact your solar installer.

#3xx

GROWATT ERROR CODES.

Warning Code - #300

Description: No utility.

What to do: Confirm grid is lost or not. If the warning still exist contact your solar installer.

Warning Code - #301

Description: Grid voltage outrange.

What to do: Check the AC voltage is in the range of standard voltage in specification. If the warning still exist contact your solar installer.

Warning Code - #302

Description: Grid frequency outrange.

What to do: Check the frequency is in the range of specification or not. If the warning still exist contact your solar installer.

Warning Code - #303

Description: EPS mode, over load.

What to do: Reduce the load of EPS output. If the warning still exist contact your solar installer.

Warning Code - #304

Description: CT Open or Wrong.

What to do: Check if AC current sensor is well connected. If the warning still exist contact your solar installer.

Warning Code - #305

Description: CT line reversed or Ground fail.

What to do: Check the L line and N line of SP-CT is reversed or not. If the warning still exist contact your solar installer.

Warning Code - #306

Description: Communication fault M3 didn’t receive SP-CT data.

What to do: Check communication wire. If the warning still exist contact your solar installer.

Warning Code - #307

Description: Communication fault.

What to do: Check communication wire. If the warning still exist contact your solar installer.

#4xx

GROWATT ERROR CODES.

Warning Code - #400

Description: Fan function abnormal.

What to do: After shutdown, check the fan connection. If the warning still exist contact your solar installer.

Warning Code - #401

Description: Inverter communicates with Meter abnormal.

What to do: Check if the meter is on. If the warning still exist contact your solar installer.

Warning Code - #402

Description: Optimizer and inverter communication is abnormal.

What to do: Check if the optimizer is on. If the warning still exist contact your solar installer.

Warning Code - #403

Description: String communication abnormal.

What to do: After shutdown, check the string panel wiring. If the warning still exist contact your solar installer.

Warning Code - #404

Description: EEPROM abnormal.

What to do: Restart the inverter. If the warning still exist contact your solar installer.

Warning Code - #405

Description: Firmware version is not consistent.

What to do: Update the right version firmware. If the warning still exist contact your solar installer.

Warning Code - #406

Description: Boost module error.

What to do: Rester the inverter. If the warning still exist contact your solar installer.

Warning Code - #407

Description: NTC Temperature too high or NTC is broken.

What to do: Restart the inverter. If the warning still exist contact your solar installer.

Warning Code - #408

Description: NTC is broken.

What to do: Restart the inverter. If the warning still exist contact your solar installer.

Warning Code - #409

Description: CT Connect abnormal.

What to do: Restart the inverter. If the warning still exist contact your solar installer.

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GEN2 INVERTERS (White).

#2xx

GROWATT ERROR CODES.

Error Code - #200

Description: AFCI (arc-fault circuit interrupter) fault.

What to do: After shutdown, check the PV panel terminal. Reset the inverter. If the error keeps showing, contact your solar installer.

Error Code - #201

Description:Leakage current too high.

What to do: Restart the inverter. If the error keeps showing, contact your solar installer.

Error Code - #202

Description: The DC input voltage is exceeding the maximum tolerable value.. 

What to do:  Immediately disconnect the DC switch and check the voltage. If the fault keeps showing after the normal voltage is restored, contact your solar installer.

Error Code - #203

Description: PV isolation Low.

What to do: After shutdown, check whether the panel shell is reliably grounded. If the fault keeps showing, contact your solar installer.

#3xx

Growatt error codes.

Error Code - #300

Description: AC V Outrange.

What to do: Check grid voltage. This fault will fix itself. If the error keeps showing despite grid voltage returning tolerable range, contact your solar installer.

Error Code - #301

Description: AC terminals reversed.

What to do: heck AC terminals. If the error keeps showing, contact your solar installer.

Error Code - #302

Description: No AC Connection.

What to do: After shutdown, check AC wiring. If the error keeps showing, contact your solar installer.

Error Code - #303

Description: NE abnormal.

What to do: Check PE, to ensure that the PE line contact good. If the fault keeps showing, contact your solar installer.

Error Code - #304

Description: AC F Outrange

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #305

Description: Over Load Fault.

What to do: Check whether output load over range; If load too large, please reduce load. If the error keeps showing, contact your solar installer.

Error Code - #306

Description: CT LN Reversed.

What to do: After shutdown Check the SP-CT connection. If the error keeps showing, contact your solar installer.

Error Code - #307

Description: Communication fault M3 didn’t receive SP-CT data.

What to do: Check communication wire. If the error keeps showing, contact your solar installer.

Error Code - #308

Description: Communication fault; Pairing time too long.

What to do: Restart pairing. If the error keeps showing, contact your solar installer.

#4xx

Growatt error codes.

Error Code - #400

Description: DCI bias abnormal.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #401

Description: DC Voltage High Fault.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #402

Description: Output DC current too high.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #403

Description: Output current unbalance.

What to do: After shutdown, check the output current is not balanced. If the error keeps showing, contact your solar installer.

Error Code - #404

Description: Bus sample fault.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #405

Description: Relay fault.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #406

Description: Init model fault.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #407

Description: AutoTest failure.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #408

Description: Over temperature.

What to do: After shutdown, check the temperature. If the error keeps showing, contact your solar installer.

Error Code - #409

Description: Bus voltage abnormal.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #410

Description: Communication board and control panel sampling battery voltage is inconsistent.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #411

Description: Communication fault.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #412

Description: Temperature sensor connection is abnormal.

What to do: After shutdown, check the temperature sampling module is connected properly. If the error keeps showing, contact your solar installer.

Error Code - #413

Description: IGBT drive fault.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #414

Description: EEPROM fault.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #415

Description: Internal power test fail (PV Power low).

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #416

Description: Over current protected by software.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #417

Description: The grid voltage sampling is inconsistent.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #418

Description: DSP and COM firmware version un-match.

What to do: Check the firmware version. If the error keeps showing, contact your solar installer.

Error Code - #419

Description: Inconsistent leakage current sampling.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #420

Description: GFCI fault.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #421

Description: CPLD is abnormal.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #422

Description: Sampling is inconsistent.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #424

Description: Communication board and control panel sampling battery voltage is inconsistent.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Error Code - #425

Description: AFCI self-test fault.

What to do: Restart inverter. If the error keeps showing, contact your solar installer.

Poll:

Most common Growatt error codes.

Haven’t contributed yet? Your Growatt error codes matter. Contribute to a global audience with Solar Analitica Polls and compare how common your particular Growatt error codes are;

What Growatt inverter fault codes are you experiencing?

Safe select with Solar Analytica® Polls.

ADVERTISEMENT

Reference.

You deserve transparency, the Solar Analytica team was able to provide this easily indexable online information through that of which already exists in what is considered less indexable formats;

  • Growatt global download centre (external site).
  • Growatt MIC single-phase manual.
  • Growatt MIN single-phase manual.
  • Growatt MOD three-phase manual.
  • Growatt MID three-phase manual.
Tags: Error CodesGrowatt
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